We use your approach with our Spectra App.
We bought the Arrowpoint CSS (Now Cisco 11000) for our load balancing solution since
it also did exactly what we both want - replicates files and takes the server off-line
while its doing it. We could not find a software package that could do that.
Lanny Udey
Associate Dean,
Learning and Information Technology
Hofstra University
>>> [EMAIL PROTECTED] Thursday, January 18, 2001 >>>
Hello all,
I was wondering if someone could share with me their solution to content
synchronization in cluster environment. We are in the process of setting up a four
webserver cluster (all machines are NT 4.0 sp6a, IIS 4.0, CF 4.5 Enterprise, dual 700
MHz processors, 256 Mbs RAM). One machine will act as a staging server while the
other three machines will function as productions servers. We have an Intel HLB that
will distribute the traffic from the front. We are also using Cluster Cats for CF
application recovery and CF application load balancing. We are NOT using the Cluster
Cats dynamic IP scheme.
Our scenario would use the staging server as the master content manager. On a
schedule the staging server would replicate changes to the three production servers.
My question is ...... what software packages have other people used to synchronize web
content across a CF cluster. I have looked at a few packages (RepliWeb, SureSync,
PowerSync) and they all seem to be comparable in functionality. Does anybody have any
stories from the field to share?
Also, since these are web applications and not static HTML I am wondering if there
is anyway (programatically) to remove a cluster member while the replication in in
process. I am envisioning a scenario where part of my app files are updated and then
replication fails for some reason. This would leave my app in a unstable state as all
of my files are related so that either all should be updated of none of them should be
updated. I was thinking that if I could take a member out of the production cluster
before replication starts and only put it back into the cluster if and only if the
entire replication scenario completed successfully.
Thanks in advance for any help in this area.
Bryan Ziel
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